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I’m having a nightmare! Called to the appliance because it wasn’t heating. Heater checked, ok. Heater stat ok. No supply to heater through module. Replaced module part no 426436. Dishwasher heated once, then failed to heat again. Again, no supply to heater through module. Checked heater and heater stat again, all ok. Faulty module? Replaced module again. No heat! Any ideas please?
Cheers.
Steve.Re: Bosch SGS43C12GB/15 Dishwasher
Is it filling to correct level??
Is it recirculating the water with a normal gusto?Greg
Re: Bosch SGS43C12GB/15 Dishwasher
Have done all the checks three times now. Heater ok, heater stat ok. No problem with fill, lots of water. The problem is definitely no supply from module. The question is, can anything externally affect the supply from the module? I’m pretty sure that is not the case, but can’t be 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d}. I am beginning to suspect that dodgy modules are possible, but in all my years in this game, I have never known it, and everything is telling me it can’t be that. Is it a case of fixing it with a new one? Not a road I ever like to go down, but I feel I have gone as far as I can with this one, and it is getting rather expensive. Any more suggestions please?
Cheers
SteveRe: Bosch SGS43C12GB/15 Dishwasher
WhiteVanMan1 wrote:The question is, can anything externally affect the supply from the module? I’m pretty sure that is not the case, but can’t be 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d}. I am beginning to suspect that dodgy modules are possible, but in all my years in this game, I have never known it, and everything is telling me it can’t be that.
The water point device on the heater box can take the module out. Being as a new module cured the fault just once I suspect that that may be the case? Only very close inspection of the module may show a blown triac confirming that theory though.
No live feed to the heater rules out water flow rate problems as you would at least get a supply to the heater micro switch but on this model live testing access is tricky to say the least!
Re: Bosch SGS43C12GB/15 Dishwasher
Hi Martin,
What you say would appear to be the case I think, though I am not sure what you mean by the water point device. On the top of the heater, there is what I assume to be a thermostat/thermistor which is in two parts. One side is a normally closed stat that goes to one side of the heater. This checks out ok. The other side is what I assumed to be a restoration stat/thermistor. Is this what you call the water point device? I have done all the live testing which is quite simple on this one, as the live and neutral supply to the heater are both switched through the module. I have checked the first module that I fitted, and it looks as if it has burnt out a triac, it was smelling and has an overheat mark on the cover. This bears out your theory. The second new module appears to be ok as far as burning any components out goes. It sounds like it is the end of the road for this one I think. Either that or a new heater, but experience tells me that is not the way to go.Re: Bosch SGS43C12GB/15 Dishwasher
WhiteVanMan1 wrote:The other side is what I assumed to be a restoration stat/thermistor. Is this what you call the water point device?
No the water point (or diverter valve to give it another more appropriate name) is the motorised device attached under the heater box. They often tend to leak through the gear/cambox onto the motor electrics then blow the module triac. Checking the location of that blown triac will point directly to the component that’s causing you the problem. My guess at this point is that it likey to be the water point diverter?
WhiteVanMan wrote:The second new module appears to be ok as far as burning any components out goes.
Mmmm? probably has a blown triac I would think?
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